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Model Aircraft Knowlege

Its technical requirements are:

With maximum flight weight of five kilograms, including fuel;
Maximum lift area of one hundred and fifty square decimeter;
Maximum wing loading 100 g / dm;
Maximum piston engine working volume of 10 ml.
1, what is the aircraft model
Generally considered not to fly to the actual size of a model aircraft produced by a certain percentage called aircraft models.
2, what is the model aircraft
Commonly known as the model can fly in the air as a model airplane called aviation model.


HM aircraft generally manned aircraft, mainly composed of six parts of the wing, tail, fuselage, landing gear, engine and control system.
1, is a model airplane wing produces lift --- devices in flight, and to maintain lateral stability when flying model airplanes.
2, tail --- including the vertical fin and horizontal tail of two parts. Horizontal tail pitch can be maintained stable model aircraft flying, the direction of the vertical tail remain stable when flying model airplanes. Elevator on the horizontal tail lift control model airplanes, on the vertical tail rudder can be controlled model aircraft flight direction. There are also models of aircraft using the V-tail, need to mix control, remote control model aircraft generally have this feature. Two outward sloping tail rudder and elevator joint control. The most special case is the use of S wing airfoil unpowered glider, such machines only and not the level of the vertical tail fin.
3, the various parts of the body --- the model into an integrated whole trunk section is called the body. While loading the necessary control parts, equipment and fuel the body.
4, landing gear --- for model aircraft to take off, landing and parking devices. Front of a landing gear, a gear called back sides of the front three-point, one each on both sides of the front landing gear, followed by a three-point landing gear after the call.
5, the engine --- it is a device to generate a model airplane flight dynamics. Model aircraft power plant commonly used are: Elastic beam, piston engines, turbo-jet engine, an electric motor. Less frequently used are: pulse jet engine (weight, fuel consumption big), rotary engine (only the OS a) air engine (in the 1970s for indoor models and piston engine is similar.
6, solar panels and various types of batteries can also be used as a power source model aircraft.
7, the control system --- control system is mainly used to control the model of air mobility, including takeoff and landing steering and so on. Senior HM can be used to return data such as temperature sensors, airspeed indicator, altimeter, lifting meter, gps, etc..

Common Terms

1 wingspan - straight-line distance between the tip of the wing (tail) around. (Through the fuselage sections are counted).
2, Body length - a straight line from the front of the model aircraft to the very end.
3, the center of gravity - the gravity of each part of the model aircraft force action point called the center of gravity.
4, tail heart arm - from the center to the leading edge of the horizontal tail quarter chord distance.
5, airfoil - cross-sectional shape of the wing or tail.
6, the leading edge - the front of the airfoil.
7, the trailing edge - the final end of the airfoil.
8, chord - a connection between the front and rear edges.
9, the aspect ratio - the average chord length of the span ratio. Large aspect ratio wing narrow description....